1、Theproblem________whenthestudentsrefusedtodotheirhomework.
A、arose
B、aroused
C、rose
D、raised
2、Whenhesuddenly________upthesubjectofgeneticengineering,therewasanembarrassedsilence.
A、took
B、brought
C、showed
D、came
3、________somanypeopleintheUnitedStatesbeenoutofworkastoday.
A、Morethaneverbefore
B、Inthepast,therehavenever
C、Neverbeforehave
D、Formerly,thereneverwere
4、It________asashocktorealizethatIwasnotaloneintheroom.
A、came
B、appeared
C、arrived
D、reached
5、SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
A、hewanted
B、hewanting
C、himtowant
D、hiswanting